Sheet 2921-1
Page 3
Blower Filter
Silencer
Filter-Silencer
Designation Designation Desig. Designation
2311-26/1-––2
2923-8-26A
2936-8-26
2942-8-26A
2311-26/1-––3
2923-10-26A
2936-8-26
2942-10-26A
2311-26/1-––5
2923-12-26A
2936-8-26
2942-12-26A
2311-35/1-––7.5
2923-18-35A
2936-9-35
2942-18-35A
2311-35/1-––10
2923-18-35A
2936-9-35
2942-18-35A
2311-33/1-––15
2923-22-33A
2936-12-33
2942-22-33A
2311-33/1-––20
2923-22.5-33A
2936-12-33
2942-22.5-33A
2311-41/1-––25
2923-30-41A
2936-16-41
2942-30-41A
2411-D-––5D
2923-18-D
2936-10-D
2942-18-D
2411-D-––7.5D
2923-18-D
2936-10-D
2942-18-D
2411-F-––T7.5D
‡
2923-18-F
2936-12-F 2942-18-F
2411-F-––10D
2923-18-F
2936-12-F
2942-18-F
2411-F-––15D
2923-22-F
2936-12-F
2942-22-F
2411-F-––20D
2923-22.5-F
2936-12-F
2942-22.5-F
2411-G-––20
2921-2003-6/G
2936-20-G
2941-2003-6/G
2411-G-––25
2921-2003-6/G
2936-20-G
2941-2003-6/G
2411-G-––30
2921-2003-9/G
2936-20-G
2941-2003-9/G
2314-19/2-––1.5
2923-8-19A
—
2942-8-19A
2314-26/2-––2
2923-8-26A
2936-8-26
2942-8-26A
2314-26/2-––3
2923-10-26A
2936-8-26
2942-10-26A
2314-26/2-––5
2923-10-26A
2936-8-26
2942-10-26A
2314-35/1-––7.5
2923-14-35A
2936-9-35
2942-14-35A
2314-35/1-––10
2923-18-35A
2936-9-35
2942-18-35A
2314-21/1-––15
2923-18-21A
2936-10-21
2942-18-21A
2314-33/1-––20
2923-22.5-33A
2936-12-33
2942-22.5-33A
2314-33/1-––25
2923-30-33A
2936-12-33
2942-30-33A
2314-33/1-––30
2923-30-33A
2936-12-33
2942-30-33A
Blower Filter
Silencer
Filter-Silencer
Designation
Designation
Desig.
Designation
2414-F-––T7.5D
‡
2923-18-F
2936-12-F 2942-18-F
2414-F-––10D
2923-18-F
2936-12-F
2942-18-F
2414-F-––15D
2923-22-F
2936-12-F
2942-22-F
2414-F-––20D
2923-22-F
2936-12-F
2942-22-F
23165-14/3-––1.5
2923-8-14A
—
2942-8-14A
23165-19/2-––2
2923-8-19B
—
2942-8-19B
23165-26/2-––3
2923-8-26A
2936-8-26
2942-8-26A
23165-26/2-––5
2923-10-26A
2936-8-26
2942-10-26A
23165-35/2-––7.5
2923-14-35A
2936-9-35
2942-14--35A
23165-35/2-––10
2923-14-35A
2936-9-35
2942-14-35A
23165-21/1-––15
2923-18-21A
2936-10-21
2942-18-21A
23165-33/1-––20
2923-22-33A
2936-12-33
2942-22-33A
23165-33/1-––25
2923-22.5-33A
2936-12-33
2942-22.5-33A
23165-33/1-––30
2923-30-33A
2936-12-33
2942-30-33A
24165-F-––10D
2923-18-F
2936-12-F
2942-18-F
24165-F-––15D
2923-22-F
2936-12-F
2942-22-F
24165-F-––20D
2923-22-F
2936-12-F
2942-22-F
2322-19/3-––3
2923-8-19B
—
2942-8-19B
2322-19/3-––5
2923-8-19B
—
2942-8-19B
2322-28/2-––7.5
2923-14-28A
2936-9-28
2942-14-28A
2322-28/2-––10
2923-14-28A
2936-9-28
2942-14-28A
2322-21/2-––15
2923-18-21A
2936-10-21
2942-18-21A
2322-21/2-––20
2923-18-21A
2936-10-21
2942-18-21A
2322-21/2-––25
2923-18-21A
2936-10-21
2942-18-21A
2322-33/2-––30
2923-22-33A
2936-12-33
2942-22-33A
23305-21/2-––20
2923-18-21A
2936-10-21
2942-18-21A
23305-21/2-––25
2923-18-21A
2936-10-21
2942-18-21A
23305-21/2-––30
2923-18-21A
2936-10-21
2942-18-21A
‡ TEFC only.
Notes:
Series 2921 are panel fi lters and the designations are descriptive. For example, in the designation 2921-1602-6/44, the 16 means 16"
pipe size; the 02 means 2 sections long (the sections are four-sided and each can hold a maximum of 4 fi lter panels); 6 means 6 fi lter
panels (out of a potential for 8 in this case); the 44 means the case number. When ordering, add a fi nal T or W. T means the fi lter pan-
els are a throwaway type--replace with new fi lter panels when they get dirty. W means washable fi lter panels are furnished. W models
have a higher initial cost than T models. In general, Series 2921 Panel Filters are off ered for blowers having an open rating of 6000 cfm
or more.
Series 2923 Filters are the Air-Maze type. All North American blower fi lter assemblies are off ered with the choice of either of two ele-
ments: Add suffi
x W to fi lter designation for the oil-wetted metal screen fi lter which may be cleaned and reused indefi nitely, or add T
for the paper element which is thrown away and replaced when dirty. The paper elements have a cellulose resin impregnated fi lter
medium that is rated at 20 micron absolute, and 99.2% eff ective for particles of 5 micron size and larger. At any time in the fi eld a
complete fi lter assembly is easily converted to the other style by exchanging the type of element in it. In general, Series 2923 Filters are
off ered for blowers having an open rating of less than 6000 cfm.
Series 2936 Silencers are matched to blowers by inlet pipe size, and are off ered for all North American blowers having inlet pipe size of
6" or more. A 2936-8-24 Silencer would fi t a 24 case blower with 6" inlet. We off er combination fi lter-silencers for blowers having inlets
of less than 6" pipe size.
Series 2941 Filter-Silencer combinations consist of Series 2921 Filter with a 2936 Silencer enclosed within it. The 2941 Filter-Silencer
combination therefore has the same external dimensions as the corresponding 2921 Filter only.
Series 2942 Filter-Silencer combinations are off ered for all blowers for which a Series 2923 Filter only is off ered (even when a 2936
Silencer only is not off ered).
If a blower has a Series 2923 Filter (size 6" threaded or larger) you can convert to a Series 2942 Filter-Silencer by ordering a Series
2942S Silencer, same size and price as the corresponding Series 2936 Silencer listed on this sheet for that blower. (The 2936 Silencer
has a cover completing the assembly, while the 2942S has instead a fl ange for mounting the fi lter. The silencer portion is always
mounted to the blower, and the fi lter to the silencer.)
